I'd rule out the possibility of actually talking to them, as "spirits of this rank are almost never seen in person, preferring to make their lairs in deep, protected Places-That-Aren't, and are too powerful for the world of Flesh to support them - they can't cross the Gauntlet. Their servant umia enact their will across the Hisil." (WtF 2e, 181)

Nothing stopping you from dealing with their spirit servants though....